JM54AC244SZA-RH

Overview

The JM54AC244SZA-RH is a high-speed CMOS octal bus driver from the 54AC series, manufactured by National Semiconductor. It features two independent 4-bit drivers with true outputs and three-state capability. The device operates within a voltage range of 2V to 6V for CMOS logic levels. It is housed in a hermetic ceramic LCC-20 package (CQCC20), designed for military and aerospace applications requiring radiation hardness against total ionizing dose, single event latch-up, and single event upset.

Feature Summary

• High radiation hardness suitable for demanding space conditions
• Hermetic ceramic packaging for harsh environmental protection
• Three-state output control for bus line isolation

Applications

• Aerospace data bus interfaces
• Military electronic systems
• Harsh environment signal routing

Procurement Notes

Verify the manufacturer lot traceability and QML-V qualification status upon receipt. Confirm that the ceramic package integrity remains uncompromised during handling. Ensure compatibility with existing radiation tolerance requirements for the specific mission profile before final integration into the system design.

Selection Notes

Select this component when radiation tolerance and hermetic sealing are mandatory. Compare pinout compatibility with standard plastic packages if board space is constrained. Verify that the 2V to 6V operating range aligns with the system power supply architecture.

Part Context

This part belongs to the 54AC family of high-speed CMOS logic functions. Unlike commercial variants, these devices undergo rigorous testing for radiation effects. They share logical functionality with non-radiation-hardened counterparts but differ significantly in packaging and reliability standards required for defense and space sectors.

Replacement Considerations

Direct substitutes must be QML-V qualified 54AC244 variants in hermetic LCC-20 packages. Non-hermetic or commercial grade equivalents lack the necessary radiation hardness specifications.